在ViewHolder中，需要在每次视图被绑定时设置AutoCompleteTextView的适配器和数据源。

示例代码如下：

public class MyAdapter extends RecyclerView.Adapter { private List dataList;

@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    // create a new view
    View view = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.my_layout, parent, false);
    MyViewHolder holder = new MyViewHolder(view);
    return holder;
}

@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
    holder.autoCompleteTextView.setAdapter(new ArrayAdapter(holder.itemView.getContext(),
            android.R.layout.simple_dropdown_item_1line, dataList));
}

@Override
public int getItemCount() {
    return dataList.size();
}

public static class MyViewHolder extends RecyclerView.ViewHolder {
    public AutoCompleteTextView autoCompleteTextView;

    public MyViewHolder(View itemView) {
        super(itemView);
        autoCompleteTextView = itemView.findViewById(R.id.autoCompleteTextView);
    }
}

}

在上面的示例中，onBindViewHolder方法在每次ViewHolder被绑定时设置适配器和数据源。注意AutoCompleteTextView需要在ViewHolder中声明为public，以便在外部使用。